کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
231930 1427459 2008 8 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Residence time distribution studies of high pressure fluidized bed of microparticles
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی مهندسی شیمی (عمومی)
پیش نمایش صفحه اول مقاله
Residence time distribution studies of high pressure fluidized bed of microparticles
چکیده انگلیسی

Fluidized bed coating with supercritical carbon dioxide (SC-CO2) is a promising technology for processing microparticles of high added value. Up to now, mainly particles with sizes higher than 100 μm have been used. The main challenge is to be able to uniformly coat particles with smaller sizes. The key point is to get a good mixing of both, solids and supercritical fluid. The quality of the liquid mixing has been analyzed by means of residence time distribution studies of fluidized Geldart type A glass beads (dp,s = 65 μm; dp,s = 176 μm) at pressures from 8 to 14 MPa and temperatures from 35 up to 50 °C. Experimental results have been correlated satisfactorily with a one-parameter model (N tanks in series) and show that the mixing is acceptable with two or three tanks in series, with the exception of experiments at fluid velocities below twice the minimum fluidization velocity and small initial volume of solids where the mixing is worse.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: The Journal of Supercritical Fluids - Volume 44, Issue 3, April 2008, Pages 433–440
نویسندگان
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